Notes: Muscle Types & Function

(1) Types of Muscle Skeletal Cardiac Smooth

Cardiac Muscle Skeletal Muscle Smooth Muscle

(2) Skeletal Muscle Physical Characteristics: –Long cells –Whole muscle has striations Type of Movement: –Voluntary –Allows overall body mobility –Contracts fast w/great force, tires fast also Location: –On top of bones & connecting them

(3) Cardiac Muscle Physical Characteristics: –Branched cells –Whole muscle has striations Types of Movement: –Involuntary –Steady, consistent movement –Heartbeat (rate gauged by nervous system) Location: –heart

(4) Smooth Muscle Physical Characteristics: –Long cells –Whole muscle NOT striated Type of Movement: –Involuntary –Slower, yet consistent movement –Forces fluids & solids through channels Location: –Digestive & excretive organs –Respiratory passageways

(5) Muscle Function Produce movement –Bones = attachment points –Internal organs (move nutrients, waste, etc.) Maintain posture –Unique to Bipedalism Stabilize joints –Allows for wider range of movement and use of force Generate heat –During contraction